With special lithofacies paleographical setting in Qikou sag, a lot of lithostratigraphic traps form.

歧口凹陷区特有的岩相古地理环境，形成了大量的岩性地层圈闭。

youdao

With special lithofacies paleographical setting in Qikou sag, a lot of lithostratigraphic traps form.

歧口凹陷区特有的岩相古地理环境，形成了大量的岩性地层圈闭。

youdao